What is the Chess Middlegame III game, how does it work?

According to the introduction of Chess King, Chess Middlegame III is a Board game on the Android platform. There is currently a 1.0.0 version released on May 03, 2017, you can see the details below.

Chess Middlegame III course composed by GM Alexander Kalinin is aimed at teaching a student much of the middlegame methods and intricacies through a theoretical section. Openings: Sicilian defense (Closed System and 3. Bb5 var.), Scandinavian defense, Grunfeld defense, Queen's Gambit Accepted, Reti opening and others.

This course is in the series Chess King Learn (http://chessking.com/guide/android/), which is an unprecedented chess teaching method. In the series are included courses in tactics, strategy, openings, middle game, and endgame, split by levels from beginners to experienced players, and even professional players.

With the help of this course, you can improve your chess knowledge, learn new tactical tricks and combinations, and consolidate the acquired knowledge into practice.

The program acts as a coach who gives tasks to solve and helps to solve them if you get stuck. It will give you hints, explanations and show you even striking refutation of the mistakes you might make.

The program also contains a theoretical section, which explains the methods of the game in a certain stage of the game, based on actual examples. The theory is presented in an interactive way, which means you can not only read the text of the lessons, but also to make moves on the board and work out unclear moves on the board.

Advantages of the program:
♔ High quality examples, all double-checked for correctness
♔ You need to enter all key moves, required by the teacher
♔ Different levels of complexity of the tasks
♔ Various goals, which need to be reached in the problems
♔ The program gives hint if an error is made
♔ For typical mistaken moves, the refutation is shown
♔ You can play out any position of the tasks against the computer
♔ Interactive theoretical lessons
♔ Structured table of contents
♔ The program monitors the change in the rating (ELO) of the player during the learning process
♔ Test mode with flexible settings
♔ Possibility to bookmark favorite exercises
♔ The application is adapted to the bigger screen of a tablet
♔ The application does not require an internet connection

The course includes a free part, in which you can test the program. Lessons offered in the free version is fully functional. They allow you to test the application in real world conditions before releasing the following topics:
1. Petrov defense
1.1. Petrov defense
1.2. System with 3.Nxe5
1.3. System with 3. d4
2. Ruy Lopez
2.1. Ruy Lopez
2.2. Marshall counter-attack
2.3. Anti-Marshall system
3. Scandinavian defense
3.1. Scandinavian defense
3.2. Variation with 4. d4 Nf6 5. Bd2
3.3. System with 5. Nf3 Bg4
3.4. System with 5. Nf3 c6
3.5. System with 2. exd5 Nf6
4. Sicilian defense
4.1. Sicilian defense
4.2. Closed Variation
4.3. Systems with Bf1-b5.
5. Queen's gambit accepted.
5.1. Queen's gambit accepted.
5.2. 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. 0-0
5.3. 3. e4
6. Grunfeld defense
6.1. Grunfeld defense
6.2. System with 7. Bc4
6.3. 7.Nf3 0-0 8. Rb1
6.4. 3 Variations 6. ...c5 7. Bb5 and 6. ... Bg7 7. Bb5
6.5. Variation 7. Nf3 c5 8.Be3
7. Queen's pawn opening 1. d4 Nf6 2. Nf3
7.1. Queen's pawn opening 1. d4 Nf6 2. Nf3
7.2. 1. d4 Nf6 2. Nf3 g6 3. Bg5
7.3. 1. d4 Nf6 2. Nf3 e6 3. Bg5
8. Réti opening
8.1. Réti opening
8.2. 1.Nf3 d5 2.c4 e6
8.3. 1.Nf3 d5 2.c4 c6
8.4. 1. Nf3 d5 2. c4 d4
9. King's fianchetto opening
9.1. King's fianchetto opening
9.2. 2. ... d5 3. Nd2 c5 4. Ngf3 Nc6 5. g3 Nf6
9.3. 2. ... d5 3. Nd2 c5 4. Ngf3 Nc6 5. g3 g6
9.4. 2. ... c5 3. Nf3 Nc6 4. g3 g6 5. Bg2 Bg7 6. 0-0 Nge7

What's new in version 1.0.0 * Invert board option is replaced by on-board gesture
* Added "Auto next" option - automatically switch to the next exercise
* Added UCI engine support
* Added ability to navigate through lesson using swipe gestures on notation
* Added chess symbols convention
* Added "Copy PGN" option
* Added "Clear statistics" option
* Improved current theme and subtheme storing
* Improved test mode
* Various fixes and improvements